Biology Questions

BIO 169 Ch. 20 S.G.

Name: __________________________ Date: _____________
1. The anatomical region found between the lungs that extends from the sternum to the vertebral column and from the first rib to the diaphragm.
A) Epicardium
B) Abdominal cavity
C) Pericardium
D) Mediastinum
E) Thoracic cavity
2. The membrane that surrounds and protects the heart is called the
A) pericardium.
B) pleura.
C) myocardium.
D) mediastinum.
E) endocardium.
3. The apex of the heart is normally pointed
A) at the midline.
B) to the left of the midline.
C) to the right of the midline.
D) is different for males and females
E) posteriorly.
4. The outermost layer of the pericardium, which consists of inelastic dense irregular connective tissue, is called the
A) parietal layer of pericardium.
B) serous pericardium.
C) fibrous pericardium.
D) epicardium.
E) endocardium.
5. This is used to reduce friction between the layers of membranes surrounding the heart.
A) Synovial fluid
B) Endocardium
C) Pleural fluid
D) Pericardial fluid
E) Capillary endothelium
6. This layer of the heart wall consists of mesothelium and connective tissue.
A) Epicardium
B) Myocardium
C) Endocardium
D) Fibrous pericardium
E) None of the answer selections are correct

Page 1

BIO 169 Ch. 20 S.G.

7. Which layer of the heart wall consists of cardiac muscle tissue?
A) Epicardium
B) Pericardium
C) Myocardium
D) Endocardium
E) Hypocardium
8. This pouch-like structure increases the total filling capacity of the atrium.
A) Ventricle
B) Coronary sulcus
C) Fossa ovalis
D) Interatrial septum
E) Auricle.
9. This groove found on the surface of the heart marks the boundary between the right and left ventricles.
A) Coronary sulcus
B) Anterior interventricular sulcus
C) Posterior interventricular sulcus
D) Coronary sinus
E) Anterior intraventricular sulcus
10. These muscular ridges are found on the anterior wall of the right atrium and extend into the auricles.
A)